That said, the individual ingredients are well-studied
BMC Public Health (2012) 12:394.10.1186/1471-2458-12-394 Summary Keywords oral vitamin B12, pernicious anemia, mecobalamin, cobalamin, cyanocobalamin Citation Chan CQH, Low LL and Lee KH (2016) Oral Vitamin B12 Replacement for the Treatment of Pernicious Anemia
Timing and total load matter When people ask about combining products, the underlying concern is usually cumulative effect: how everything you take interacts across a day
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